Summary I had some yellow squishy practice golf balls laying around and thought I'd use them for my AM8 anti-vibration feet. You'll need 6. 2 for the back, 2 for the front and 2 for the middle T. These are the balls I used - https://www.amazon.com/PrideSports-Practice-Balls-Count-Yellow/dp/B00466W9X0/ref=pd_bxgy_200_img_3?_encoding=UTF8&psc=1&refRID=ZDQ5RJDD88RFN7AY87YT This is printed and verified to work great! Please be sure to tip and post post makes!